#!/usr/bin/env python
# -*- coding:utf-8 -*-
# Create by zhang
# Create on 2022/6/21 9:23


class UnimplementedError(Exception):

    def __init__(self):
        pass

    def __str__(self):
        return "Unimplemented error!"


class DataOverdueError(Exception):

    def __init__(self):
        pass

    def __str__(self):
        return "Data overdue error!"